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CVE-2026-49352 is an authentication bypass vulnerability in decolua 9Router affecting versions 0.2.21 through 0.4.43. The application used a hardcoded fallback JWT signing secret in authentication-related code paths, including the login route, middleware, and dashboard session handling. When the JWT_SECRET environment variable was unset, 9Router silently fell back to this known constant, allowing an attacker to generate forged JSON Web Tokens and present them as a valid auth_token cookie. Because trust in the session token depended on a publicly known embedded secret rather than a deployment-specific secret, remote attackers could bypass authentication and impersonate legitimate users or administrators. The issue was fixed in version 0.4.44.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
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Cross-references every affected SKU, including bundled OEM variants.
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